135 lines
3.9 KiB
C++
135 lines
3.9 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef DATABASE_H
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#define DATABASE_H
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#include "config.h"
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#include <sqlite3.h>
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#include <QtGlobal>
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#include <QObject>
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#include <QMutex>
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#include <QMap>
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#include <QSqlDatabase>
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#include <QSqlQuery>
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#include <QString>
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#include <QStringList>
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#include <QRecursiveMutex>
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#include "includes/shared_ptr.h"
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#include "sqlquery.h"
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class QThread;
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class TaskManager;
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class Database : public QObject {
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Q_OBJECT
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public:
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explicit Database(SharedPtr<TaskManager> task_manager, QObject *parent = nullptr, const QString &database_name = QString());
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~Database() override;
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static const int kSchemaVersion;
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struct AttachedDatabase {
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AttachedDatabase() {}
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AttachedDatabase(const QString &filename, const QString &schema, bool is_temporary)
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: filename_(filename), schema_(schema), is_temporary_(is_temporary) {}
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QString filename_;
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QString schema_;
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bool is_temporary_;
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};
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void ExitAsync();
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QSqlDatabase Connect();
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void Close();
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void ReportErrors(const SqlQuery &query);
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QRecursiveMutex *Mutex() { return &mutex_; }
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void RecreateAttachedDb(const QString &database_name);
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void ExecSchemaCommands(QSqlDatabase &db, const QString &schema, int schema_version, bool in_transaction = false);
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int startup_schema_version() const { return startup_schema_version_; }
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int current_schema_version() const { return kSchemaVersion; }
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void AttachDatabase(const QString &database_name, const AttachedDatabase &database);
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void AttachDatabaseOnDbConnection(const QString &database_name, const AttachedDatabase &database, QSqlDatabase &db);
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void DetachDatabase(const QString &database_name);
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Q_SIGNALS:
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void ExitFinished();
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void Error(const QString &error);
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void Errors(const QStringList &errors);
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private Q_SLOTS:
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void Exit();
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public Q_SLOTS:
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void DoBackup();
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private:
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static int SchemaVersion(QSqlDatabase *db);
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void UpdateMainSchema(QSqlDatabase *db);
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void ExecSchemaCommandsFromFile(QSqlDatabase &db, const QString &filename, int schema_version, bool in_transaction = false);
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void ExecSongTablesCommands(QSqlDatabase &db, const QStringList &song_tables, const QStringList &commands);
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void UpdateDatabaseSchema(int version, QSqlDatabase &db);
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void UrlEncodeFilenameColumn(const QString &table, QSqlDatabase &db);
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QStringList SongsTables(QSqlDatabase &db, const int schema_version);
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bool IntegrityCheck(const QSqlDatabase &db);
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void BackupFile(const QString &filename);
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static bool OpenDatabase(const QString &filename, sqlite3 **connection);
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SharedPtr<TaskManager> task_manager_;
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// Alias -> filename
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QMap<QString, AttachedDatabase> attached_databases_;
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QString directory_;
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QMutex connect_mutex_;
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QRecursiveMutex mutex_;
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// This ID makes the QSqlDatabase name unique to the object as well as the thread
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int connection_id_;
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static QMutex sNextConnectionIdMutex;
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static int sNextConnectionId;
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// Used by tests
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QString injected_database_name_;
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uint query_hash_;
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QStringList query_cache_;
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// This is the schema version of Strawberry's DB from the app's last run.
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int startup_schema_version_;
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QThread *original_thread_;
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};
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#endif // DATABASE_H
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